BD5471MUV is a low voltage drive class-D stereo speaker amplifier that was developed for note-book PC, cellular phone, mobile audio products and the others. It is unnecessary for LC filters of speaker outputs. Only 7 external components are needed for speaker system. Also, 3.3V regulator in BD5471MUV can use power supply for audio-codec. BD5471MUV, that is high-efficiency, low consumption, is suitable for application by using battery. Shutdown current is 0µA typically. Also, start-up time is fast from shutdown to active mode. BD5471MUV can use for some applications that change mode between “shutdown state” and “active state”.
The BD5471MUV is a low‑voltage Class‑D stereo speaker amplifier designed for notebook PCs, mobile phones and other battery‑powered audio devices. It integrates a 3.3 V regulator, pop‑noise suppression and standby mute functions, requiring only seven external components.
The document includes a description of features, absolute maximum ratings, operating conditions, electrical characteristics, block and pin diagrams, example application circuits, an evaluation‑board schematic and parts list, as well as ordering information and safety notices.
| Typical output power (stereo) | 2.3 W |
|---|---|
| Gain settings | 6, 12, 18, 24 dB |
| Built‑in regulator voltage | 3.3 V |
| Supply voltage range | 4.5 V – 5.5 V |
| Start‑up time | 0.78 ms – 1.46 ms |
The device operates from a VDD of 4.5 V to 5.5 V.
Typical stereo output power is 2.3 W at VDD = 5 V, RL = 40 Ω.
Only seven external components are needed.
The start‑up time ranges from 0.78 ms to 1.46 ms.